CN207009519U - Battery Pack Power Structure and Battery Pack Power - Google Patents

Abstract

The embodiment of the utility model proposes a battery pack power supply structure and a battery pack power supply, which relate to the field of battery pack power supplies. The power supply structure of the battery pack includes a battery pack, a pole plate and a heat sink. The heat sink is an insulating heat sink. The battery pack is in contact with the pole plate and is electrically connected to the battery pack. The battery pack power supply structure and the battery pack power supply provided by the utility model have the beneficial effects of strong heat dissipation capability and long service life.

Description

Battery Pack Power Structure and Battery Pack Power

technical field

The utility model relates to the field of battery pack power supplies, in particular to a battery pack power supply structure and a battery pack power supply.

Background technique

At present, the power supply of individual portable lithium battery packs uses high-energy density lithium battery packs as energy storage units, and provides individual equipment power supply through high-efficiency multi-standard power conversion devices, in order to meet the needs of individual soldiers in actual combat environments such as field marching, concealment, and falling. , The structure of the overall battery pack power supply enclosure requires airtightness.

However, due to the airtight structure of the power supply shell, the current battery pack power supply has difficulty in heat dissipation. For example, when one of the batteries in the battery pack generates abnormal heat due to internal resistance, it may cause the battery to be affected due to heat dissipation. The service life of the group power supply.

How to solve the above problems is the focus of attention of those skilled in the art.

Utility model content

In view of this, the purpose of this utility model is to provide a battery pack power supply structure and a battery pack power supply to solve the problem of difficult heat dissipation of the battery pack power supply in the prior art.

In order to achieve the above object, the technical scheme that the utility model embodiment adopts is as follows:

On the one hand, the embodiment of the utility model proposes a battery pack power supply structure, the battery pack power supply structure includes a battery pack, a pole plate and a heat sink, the heat sink is an insulating heat sink, and the heat sink is arranged on the pole between the plate and the battery pack, and the heat sink is respectively in contact with the pole plate and the battery pack, and the pole plate is electrically connected to the battery pack.

Further, the battery pack includes a plurality of battery cells, the heat sink is provided with a plurality of through holes, and each of the through holes is sleeved outside a cell of one of the battery cells.

Further, the battery pack includes a plurality of batteries, the pole plates include a positive pole plate and a negative pole plate, the positive pole plate is electrically connected to the positive terminal of each battery of the battery pack, and the negative pole plate It is electrically connected to the negative terminal of each battery of the battery pack, the number of the heat sink is at least one, and the positive electrode plate and/or the negative electrode plate are in contact with the heat sink.

Further, the number of the heat sinks is two, the positive electrode plate is in contact with one of the heat sinks, the negative electrode plate is in contact with the other heat sink, and the power supply structure of the battery pack also includes multiple Each of the heat dissipation sleeves is sleeved on the outside of one of the batteries, and the two ends of each of the heat dissipation sleeves are respectively connected to the two heat dissipation elements.

Further, the battery pack power supply structure further includes a plurality of cooling fins, and each adjacent two of the cooling sleeves are connected through one of the cooling fins.

Further, the heat dissipation element includes a graphite film heat dissipation element.

Further, the graphite film heat sink is a flexible graphite film heat sink.

In the second aspect, the utility model also provides a battery pack power supply, the battery pack power supply includes a casing and a battery pack power supply structure, the battery pack power supply structure includes a battery pack, a pole plate and a heat sink, and the heat sink is Insulating heat sink, the heat sink is arranged between the pole plate and the battery pack, and the heat sink is respectively in contact with the pole plate and the battery pack, and the pole plate and the battery pack are electrically connected connected, the battery pack power supply structure is installed in the housing.

Further, the housing includes a first shell and a second shell, and the first shell and the second shell are detachably connected.

Further, the first housing and/or the second housing are provided with cooling fins.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model provides a battery pack power supply structure and a battery pack power supply. The battery pack power supply structure includes a battery pack, a pole plate and a radiator. The radiator is arranged between the pole plate and the battery pack. When one or several batteries of the battery pack power supply heat up due to internal resistance, the heat will be transmitted through the battery cell, and the heat will be transferred to the heat sink by heat transfer, and the heat sink will pass the heat transfer again. The heat is transferred to the pole plate in the form of a battery pack power supply, so that most of the heat generated by the battery pack power supply is transferred to the pole plate, and then dissipated through the pole plate, thereby increasing the heat dissipation efficiency of the battery pack power supply and improving the battery pack power supply. service life.

In order to make the above-mentioned purpose, features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 shows an exploded schematic diagram of a power supply structure of a battery pack provided by an embodiment of the present invention.

Fig. 2 shows a cross-sectional view of a heat dissipation sleeve and a heat dissipation fin provided by an embodiment of the present invention.

Fig. 3 is a schematic exploded view of a battery pack unit provided by another embodiment of the present invention.

Fig. 4 shows a schematic structural diagram of a first housing provided by another embodiment of the present invention.

Icon: 100-battery pack power structure; 110-battery pack; 120-plate; 121-positive plate; 122-negative plate; Power supply; 210-first housing; 211-radiating fins; 220-second housing.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. . The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. At the same time, in the description of the present utility model, it should also be noted that, unless otherwise clearly stipulated and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations. Below in conjunction with the accompanying drawings, some embodiments of the present utility model will be described in detail. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Please refer to Fig. 1, the embodiment of the utility model provides a battery pack power supply structure 100, the battery pack power supply structure 100 includes a battery pack 110, a pole plate 120 and a heat sink 130, the heat sink 130 is an insulating heat sink 130, the heat sink 130 is disposed between the pole plate 120 and the battery pack 110 , and the heat sink 130 is respectively in contact with the pole plate 120 and the battery pack 110 , and the pole plate 120 is electrically connected to the battery pack 110 .

Specifically, in this embodiment, the battery pack power supply 200 is a plurality of 18650-type lithium batteries, and the multiple 18650-type batteries are closely arranged side by side, thereby forming the battery pack power supply 200 .

The pole plate 120 is a device for connecting the battery pack 110 in series or in parallel. In this embodiment, the pole plate 120 includes a positive pole plate 121 and a negative pole plate 122. The positive pole plate 121 is electrically connected to the positive pole of the battery pack 110, and the negative pole The pole plate 122 is electrically connected to the negative pole of the battery pack 110 .

In this embodiment, the heat sink 130 is provided with a plurality of through holes, and each through hole is sleeved outside the cell of a cell battery, so that the cells of the cell battery are in close contact with the heat sink 130, so that the battery is The heat generated by the internal resistance can be transferred to the heat sink 130 .

In this embodiment, the heat sink 130 is a graphite film heat sink 130, and the graphite film heat sink 130 is a new type of heat conduction and heat dissipation material, and its effect of heat conduction and heat dissipation is very good. Certainly, in some other embodiments, the heat sink 130 of other materials may also be used, which is not limited in this embodiment.

It should be noted that, in order to make it easier to install the heat sink 130 on the cell battery pack 110, and to minimize the volume of the battery pack power supply structure 100 provided in this embodiment, the battery pack power supply structure 100 to press, if a hard graphite film heat sink 130 is used, it may cause damage to the heat sink 130 during use. In view of this, in this embodiment, the graphite film heat sink 130 is a flexible graphite film heat sink 130.

As the first implementation of this embodiment, the number of heat sink 130 is one, and the heat sink 130 is sleeved outside the cell of each positive electrode of the battery pack 110, and then the positive electrode plate 121 and the end surface of the negative electrode plate 122 They are respectively electrically connected to the positive pole and the negative pole of the battery pack 110, so that one side of the heat sink 130 is in contact with the battery pack power supply 200, and the other side is in contact with the positive electrode plate 121, so that the heat generated by the battery pack is transferred by heat transfer. to the heat sink 130 , and then transferred to the positive electrode plate 121 by the heat sink 130 , and dissipated by the positive electrode plate 121 . Due to the strong heat dissipation capability of the heat sink 130 , the heat transfer speed is fast, and most of the heat of the battery core body is transferred to the positive electrode plate 121 through heat transfer, so that the heat dissipation effect is better.

As the second implementation of this embodiment, the number of heat sink 130 is one, and the heat sink 130 is sleeved outside the cell of each negative electrode of the battery pack 110, and then the positive electrode plate 121 and the negative electrode plate 122 are respectively connected to the The positive battery cell of the battery pack 110 is electrically connected to the negative battery cell, so that one side of the heat sink 130 is in contact with the battery pack power supply 200, and the other side is in contact with the negative electrode plate 122, so that the heat generated by the battery cell is transferred through heat transfer. The mode is transmitted to the heat sink 130 , and then transferred to the negative electrode plate 122 by the heat sink 130 , and the negative electrode plate 122 dissipates heat. Due to the strong heat dissipation capability of the heat sink 130 , the heat transfer speed is fast, and most of the heat of the battery body is concentrated and transferred to the negative electrode plate 122 through heat transfer, so that the heat dissipation effect is better.

As a third implementation of this embodiment, the number of heat sinks 130 is two, one of which is sleeved outside the cell of each negative electrode of the battery pack 110, and the other heat sink 130 is sleeved on the battery pack 110 outside the cells of the positive pole of each battery, and then electrically connect the positive pole plate 121 and the negative pole plate 122 to the positive pole battery cell and the negative pole battery core of the battery cell battery pack 110, so that one side of the heat sink 130 is connected to the battery pack power supply 200 The other side is in contact with the negative electrode plate 122 and the negative electrode plate 122, so that the heat generated by the battery cell is transferred to the heat sink 130 by means of heat transfer, and then transferred to the negative electrode plate 122 and the positive electrode plate by the heat sink 130 121, and the heat is dissipated by the negative electrode plate 122 and the positive electrode plate 121. Due to the strong heat dissipation capability of the heat sink 130 , the heat transfer speed is fast, and most of the heat of the battery body is transferred to the negative electrode plate 122 and the positive electrode plate 121 through heat transfer, so that the heat dissipation effect is better.

It should be noted that, since the third implementation manner can maximize the heat dissipation efficiency, in this embodiment, the third implementation manner is preferred.

Not only that, because during use, the heat of the battery pack power supply 200 can be transferred to the heat sink 130 through the battery cells, but when the heat of the battery pack power supply 200 is generated more, the entire battery will be heated, that is, not only the battery pack The battery core will transfer heat, and the case can also transfer heat.

In view of this, in this embodiment, in order to maximize the heat dissipation capability of the battery pack power supply structure 100, the battery pack power supply structure 100 further includes a plurality of heat dissipation sleeves 140, and each heat dissipation sleeve 140 is sleeved outside a battery, Both ends of each cooling sleeve 140 are respectively connected to two cooling elements 130 .

In this embodiment, the material for making the heat sink 140 is the same as that for the heat sink 130, and the size and length of the heat sink 140 are matched with the battery of the battery pack power supply 200. When the heat generated by the battery is large, the battery The outer casing can transfer heat to the heat sink 140 through heat transfer, and then the heat is transferred to the heat sink 130 by the heat sink 140, so that the heat generated by the battery pack power supply 200 can not only be directly dissipated to the heat sink 130 through the battery cells, The heat can also be transferred to the heat dissipation sleeve 140 through the shell, thereby improving the heat dissipation efficiency.

Not only that, in order to further improve the heat dissipation efficiency, the battery pack power structure 100 provided in this embodiment further includes a plurality of heat sinks 150 , and every two adjacent heat sinks 140 are connected by a heat sink 150 . After the battery transfers heat to the heat dissipation sleeve 140 through the casing, the heat dissipation sleeve 140 can not only transfer heat to the heat sink 130 in the vertical direction, but also transfer heat to the adjacent heat dissipation sleeve 140 in the horizontal direction, thereby further Increased cooling efficiency.

It should be noted that since the battery pack power supply 200 requires the performance of each battery to be the same, when the heat generated by a certain battery is large, if the heat cannot be dissipated in time, the service life of the battery will be shortened, that is, the battery will be affected. The entire battery pack power supply 200 lifetime. Therefore, through the battery pack power supply structure 100 provided in this embodiment, the heat dissipation capability of each battery of the battery pack 110 unit can be effectively enhanced, thereby increasing the service life of the entire battery pack power supply 200 .

second embodiment

Please refer to FIG. 4 , the embodiment of the present utility model provides a battery pack power supply 200 , the battery pack power supply 200 includes a casing and the battery pack power supply structure 100 provided in the first embodiment, and the battery pack power supply structure 100 is installed in the casing. It should be noted that since the battery pack power supply structure 100 provided in this embodiment has the same structural domain functions as the battery pack power supply structure 100 provided in the first embodiment, so in this embodiment, the battery pack power supply structure 100 is no longer The structure and functions of the battery pack power supply structure 100 are described in detail, and the structure and corresponding functions of the battery pack power supply structure 100 refer to the first embodiment.

The specific shell includes a first shell 210 and a second shell 220 , and for the convenience of installation, the first shell 210 and the second shell 220 are detachably connected. Moreover, in order to enhance the heat dissipation capability of the entire battery pack power supply 200 , the first housing 210 and/or the second housing 220 are provided with heat dissipation fins 211 . The circulation of the air transfers the heat concentrated on the positive electrode plate 121 and the negative electrode plate 122 to the outside of the shell. Certainly, in some other embodiments, the heat dissipation fins 211 may also be arranged in other structures, which is not limited in this embodiment.

It should also be noted that since the heat sink 130 provided in this embodiment has a smaller thickness, the entire battery pack power supply 200 is also smaller in size and is easy to carry.

In summary, the utility model provides a battery pack power supply structure and a battery pack power supply. The battery pack power supply structure includes a battery pack, a pole plate and a heat sink, and the heat sink is arranged between the pole plate and the battery pack. The heat sink is in contact with the polar plate and the battery pack respectively. When one or several batteries of the battery pack power supply heat up due to internal resistance, the heat will be transmitted through the battery cells, and the heat will be transferred to the heat sink by means of heat transfer. The components transfer the heat to the pole plate again in the form of heat transfer, so that most of the heat generated by the battery pack power supply is transferred to the pole plate concentratedly, and then dissipated through the pole plate, thereby increasing the heat dissipation efficiency of the battery pack power supply and improving The service life of the battery pack power supply.

It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model. It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

Claims (10)

1. A battery pack power supply structure, characterized in that the battery pack power supply structure comprises a battery pack, pole plates and heat sinks, the heat sink is an insulating heat sink, and the heat sink is arranged between the pole plates and the heat sink between the battery packs, and the heat sink is respectively in contact with the pole plate and the battery pack, and the pole plates are electrically connected to the battery pack. 2. The battery pack power supply structure according to claim 1, wherein the battery pack includes a plurality of battery cells, and the heat sink is provided with a plurality of through holes, and each of the through holes is sleeved on a The outside of the cell of the cell battery. 3. The battery pack power supply structure according to claim 1, wherein the battery pack includes a plurality of batteries, the pole plates include a positive pole plate and a negative pole plate, and the positive pole plate and the battery pack The positive terminal of each battery is electrically connected, the negative electrode plate is electrically connected to the negative terminal of each battery of the battery pack, the number of the heat sink is at least one, the positive electrode plate and/or the The negative electrode plate is in contact with the heat sink. 4. The power supply structure of the battery pack according to claim 3, wherein the number of the heat sinks is two, the positive plate is in contact with one of the heat sinks, and the negative plate is in contact with the other. The heat dissipation parts are in contact with each other, and the power supply structure of the battery pack further includes a plurality of heat dissipation sleeves, each of the heat dissipation sleeves is sheathed outside one of the batteries, and the two ends of each of the heat dissipation sleeves are respectively connected to two of the heat dissipation sleeves. Heat sink connection. 5 . The power supply structure of the battery pack according to claim 4 , wherein the power supply structure of the battery pack further comprises a plurality of cooling fins, and each adjacent two of the cooling sleeves are connected by one of the cooling fins. 6 . 6. The power supply structure of a battery pack according to claim 1, wherein the heat dissipation element comprises a graphite film heat dissipation element. 7. The battery pack power supply structure according to claim 6, wherein the graphite film heat sink is a flexible graphite film heat sink. 8. A battery pack power supply, characterized in that the battery pack power supply comprises a casing and the battery pack power supply structure according to any one of claims 1 to 7, and the battery pack power supply structure is installed in the casing. 9. The battery pack power supply according to claim 8, wherein the casing comprises a first casing and a second casing, and the first casing and the second casing are detachably connected. 10. The battery pack power supply according to claim 9, wherein the first housing and/or the second housing are provided with cooling fins.